1/2 Sintering of Mullite-Containing Materials: I. Effect of Composition

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Sintering behavior of mullite-containing powders was studied over a range of chemical compositions (Al{sub 2}O{sub 3}/SiO{sub 2} ratio). Densification measurements were made for both liquid phase-containing and solid state systems. Small amounts of liquid phase were observed to have a significant effect on densification rate. A linear relationship was obtained between the percent of theoretical density and the logarithm of time for compositions in the range 73-75 wt% Al{sub 2}O{sub 3}. Currently available models for intermediate stage sintering kinetics were considered to be inadequate for these systems. Grain boundary transport 0r diffusion appeared to be the primary mechanism of densification.

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34 p.

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Sacks, Michael D. & Pask, Joseph A. December 1, 1981.

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Sintering behavior of mullite-containing powders was studied over a range of chemical compositions (Al{sub 2}O{sub 3}/SiO{sub 2} ratio). Densification measurements were made for both liquid phase-containing and solid state systems. Small amounts of liquid phase were observed to have a significant effect on densification rate. A linear relationship was obtained between the percent of theoretical density and the logarithm of time for compositions in the range 73-75 wt% Al{sub 2}O{sub 3}. Currently available models for intermediate stage sintering kinetics were considered to be inadequate for these systems. Grain boundary transport 0r diffusion appeared to be the primary mechanism of densification.

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34 p.

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  • Journal Name: Journal of the American Ceramic Society

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  • Report No.: LBL-11857
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 1109097
  • Archival Resource Key: ark:/67531/metadc870305

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  • December 1, 1981

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 2, 2017, 5 p.m.

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Sacks, Michael D. & Pask, Joseph A. 1/2 Sintering of Mullite-Containing Materials: I. Effect of Composition, article, December 1, 1981; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc870305/: accessed March 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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